US10654860B2 - Tricyclic rho kinase inhibitors - Google Patents

Tricyclic rho kinase inhibitors Download PDF

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US10654860B2
US10654860B2 US16/461,029 US201716461029A US10654860B2 US 10654860 B2 US10654860 B2 US 10654860B2 US 201716461029 A US201716461029 A US 201716461029A US 10654860 B2 US10654860 B2 US 10654860B2
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Wu Yang
Peter W. Glunz
Rajeev S. Bhide
Kamalraj Thiyagarajan
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Bristol Myers Squibb Co
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Definitions

  • the present invention relates to novel tricyclic compounds, compositions containing them, and methods of using them, for example, for the treatment or prophylaxis of disorders associated with aberrant Rho kinase activity.
  • Rho-Kinase is a member of the serine-threonine protein kinase family. ROCK exists in two isoforms. ROCK1 and ROCK2 (Ishizaki, T. et al., EMBO J. 15:1885-1893 (1996)). ROCK has been identified as an effector molecule of RhoA, a small GTP-binding protein (G protein) that plays a key role in multiple cellular signaling pathways. ROCK and RhoA are ubiquitously expressed across tissues. The RhoA/ROCK signaling pathway is involved in a number of cellular functions, such as ACTIN® organization, cell adhesion, cell migration, and cytokinesis (Riento, K. et al., Nat.
  • RhoA Upon activation of its receptor, RhoA is activated, and, in turn, it activates ROCK. Activated ROCK phosphorylates the myosin-binding subunit of myosin light chain phosphatase, which inhibits activity of the phosphatase and leads to contraction. Contraction of the smooth muscle in the vasculature increases blood pressure, leading to hypertension.
  • Rho A/ROCK signaling pathway plays an important role in signal transduction initiated by several vasoactive factors, for example, angiotensin II (Yamakawa, T. et al., Hypertension, 35:313-318 (2000)), urotension II (Sauzeau, V. et al., Circ. Res., 88:1102-1104 (2001)), endothelin-1 (Tangkijvanich, P. et al., Hepatology, 33:74-80 (2001)), serotonin (Shimokawa, H., Jpn. Circ. J., 64:1-12 (2000)), norepinephrine (Martinez, M. C.
  • PDGF platelet-derived growth factor
  • ROCK inhibitors fasudil (Asano, T. et al., J. Pharmacol. Exp. Ther., 241:1033-1040 (1987)) or Y-27632 (Uehata, M. et al., Nature, 389:990-994 (1997)) further illustrate the link between ROCK and cardiovascular disease.
  • ROCK expression and activity have been shown to be elevated in spontaneously hypertensive rats, suggesting a link to the development of hypertension in these animals (Mukai, Y. et al., FASEB J., 15:1062-1064 (2001)).
  • the ROCK inhibitor Y-27632 (Uehata, M.
  • ROCK inhibitor Y-27632 also inhibited neointimal formation in rats (Sawada, N. et al., Circulation, 101:2030-2033 (2000)).
  • ROCK inhibitor would be useful in treating other cardiovascular diseases.
  • fasudil was shown to reduce both the infarct size and neurologic deficit (Toshima, Y., Stroke, 31:2245-2250 (2000)).
  • the ROCK inhibitor Y-27632 was shown to improve ventricular hypertrophy, fibrosis and function in a model of congestive heart failure in Dahl salt-sensitive rats (Kobayashi, N. et al., Cardiovasc. Res., 55:757-767 (2002)).
  • ROCK ROCK-related diseases
  • coronary vasospasm Shimokawa, H. et al., Cardiovasc. Res., 43:1029-1039 (1999)
  • cerebral vasospasm Sato, M. et al., Circ. Res., 87:195-200 (2000)
  • ischemia/reperfusion injury Yada, T. et al., J. Am. Coll. Cardiol., 45:599-607 (2005)
  • pulmonary hypertension Fukumnoto, Y. et al., Heart, 91:391-392 (2005)
  • angina Shimokawa, H. et al., J. Cardiovasc.
  • RhoA/ROCK signaling pathway allows formation of multiple competing lamellipodia that disrupt the productive migration of monocytes (Worthylake, R. A. et al., J. Biol. Chem., 278:13578-13584 (2003)). It has also been reported that small molecule inhibitors of Rho Kinase are capable of inhibiting MCP-1 mediated chemotaxis in vitro (Iijima, H., Bioorg. Med Chem., 15:1022-1033 (2007)). Due to the dependence of immune cell migration upon the RhoA/ROCK signaling pathway one would anticipate inhibition of Rho Kinase should also provide benefit for diseases such as rheumatoid arthritis, psoriasis, and inflammatory bowel disease.
  • ROCK inhibitors may also be useful in other diseases involving smooth muscle hyper-reactivity, including asthma and glaucoma (Shimokawa, H. et al., Arterioscler. Thromb. Vase. Biol., 25:1767-1775 (2005)).
  • Rho-kinase has been indicated as a drug target for the treatment of various other diseases, including airway inflammation and hyperresponsiveness (Henry, P. J. et al., Pulm. Pharmacol. Ther., 18:67-74 (2005)), cancer (Rattan, R. et al., J. Neurosci. Res., 83:243-255 (2006); Lepley, D. et al., Cancer Res., 65:3788-3795 (2005)), fibrotic diseases (Jiang, C. et al., Int. J. Mol. Sci., 13:8293-8307 (2012); Zhou, L. et al., Am. J.
  • Nephrol., 34:468-475 (2011) as well as neurological disorders, such as spinal-cord injury, Alzheimer disease, multiple sclerosis, stroke and neuropathic pain (Mueller, B. K. et al., Nat. Rev. Drug Disc., 4:387-398 (2005); Sun, X. et al., J. Neuroimmunol., 180:126-134 (2006)).
  • CVD cardiovascular diseases
  • ROCK inhibitors Although there are many reports of ROCK inhibitors under investigation (see, for example, US 2008/0275062 A1), fasudil is the only marketed ROCK inhibitor at this time. An i.v. formulation was approved in Japan for treatment of cerebral vasospasm. There remains a need for new therapeutics, including ROCK inhibitors, for the treatment of cardiovascular diseases, cancer, neurological diseases, renal diseases, fibrotic diseases, bronchial asthma, erectile dysfunction, and glaucoma.
  • the present invention provides novel tricyclic compounds including stereoisomers, tautomers, pharmaceutically acceptable salts, or solvates thereof, which are useful as selective inhibitors of Rho kinases.
  • the present invention also provides processes and intermediates for making the compounds of the present invention.
  • the present invention also provides pharmaceutical compositions comprising a pharmaceutically acceptable carrier and at least one of the compounds of the present invention or stereoisomers, tautomers, pharmaceutically acceptable salts, or solvates thereof.
  • the compounds of the invention may be used in the treatment and/or prophylaxis of conditions associated with aberrant ROCK activity.
  • the compounds of the present invention may be used in therapy.
  • the compounds of the present invention may be used for the manufacture of a medicament for the treatment and/or prophylaxis of a condition associated with aberrant ROCK activity.
  • the present invention is directed to a method of treating a cardiovascular or related disease which method comprises administering to a patient in need of such treatment a compound of the present invention as described above.
  • diseases include, for example, hypertension, atherosclerosis, restenosis, stroke, heart failure, renal failure, coronary artery disease, peripheral artery disease, coronary vasospasm, cerebral vasospasm, ischemia/reperfusion injury, pulmonary hypertension, angina, erectile dysfunction and renal disease.
  • the present invention is directed to a method of treating diseases involving smooth muscle hyper reactivity including asthma, erectile dysfunction and glaucoma, which method comprises administering to a patient in need of such treatment a compound of the present invention as described above.
  • the present invention is directed to a method of treating diseases mediated at least partially by Rho kinase including fibrotic diseases, oncology, spinal-cord injury, Alzheimer's disease, multiple sclerosis, stroke, neuropathic pain, rheumatoid arthritis, psoriasis and inflammatory bowel disease, which method comprises administering to a patient in need of such treatment a compound of the present invention as described above.
  • the present invention is directed at pharmaceutical compositions comprising the above-mentioned compounds, processes for preparing the above-mentioned compounds and intermediates used in these processes.
  • the compounds of the invention can be used alone, in combination with other compounds of the present invention, or in combination with one or more, preferably one to two other agent(s).
  • the present invention provides, inter alia, compounds of Formula (I):
  • the present invention provides compounds of Formula (II):
  • the present invention provides compounds of Formula (III):
  • the present invention provides compounds of Formula (IV):
  • the present invention provides compounds of Formula (V):
  • the present invention provides compounds of Formula (VI):
  • the present invention provides compounds of Formula (VII):
  • the present invention provides compounds of Formula (VIII):
  • the present invention provides compounds of Formula (IX):
  • the present invention provides compounds of Formula (X):
  • the present invention provides compounds of Formula (XI):
  • the present invention provides compounds of Formula (XII):
  • R is independently selected from H and C 1-4 alkyl.
  • the present invention provides compounds of Formula (XIII):
  • the present invention provides a compound selected from any subset list of compounds exemplified in the present application.
  • the compounds of the present invention have ROCK IC 50 values ⁇ 10 ⁇ M.
  • the compounds of the present invention have ROCK IC 50 values ⁇ 1 ⁇ M.
  • the compounds of the present invention have ROCK IC 50 values ⁇ 0.5 ⁇ M.
  • the compounds of the present invention have ROCK IC 50 values ⁇ 0.1 ⁇ M.
  • the compounds of the present invention have ROCK IC 50 values ⁇ 0.05 ⁇ M.
  • the compounds of the present invention have ROCK IC 50 values ⁇ 0.01 ⁇ M.
  • the present invention provides a composition comprising at least one of the compounds of the present invention or a stereoisomer, a tautomer, a pharmaceutically acceptable salt, or a solvate thereof.
  • the present invention provides a pharmaceutical composition, comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of at least one of the compounds of the present invention or a stereoisomer, a tautomer, a pharmaceutically acceptable salt, or a solvate thereof.
  • the present invention provides a process for making a compound of the present invention.
  • the present invention provides an intermediate for making a compound of the present invention.
  • the present invention provides a pharmaceutical composition further comprising additional therapeutic agent(s).
  • the present invention provides a method for the treatment and/or prophylaxis of a condition associated with aberrant ROCK activity comprising administering to a patient in need of such treatment and/or prophylaxis a therapeutically effective amount of at least one of the compounds of the present invention or a stereoisomer, a tautomer, a pharmaceutically acceptable salt, or a solvate thereof.
  • the term “patient” encompasses all mammalian species.
  • treating cover the treatment of a disease-state in a mammal, particularly in a human, and include: (a) inhibiting the disease-state, i.e., arresting it development; and/or (b) relieving the disease-state, i.e., causing regression of the disease state.
  • prophylaxis is the protective treatment of a disease state to reduce and/or minimize the risk and/or reduction in the risk of recurrence of a disease state by administering to a patient a therapeutically effective amount of at least one of the compounds of the present invention or a or a stereoisomer, a tautomer, a pharmaceutically acceptable salt, or a solvate thereof.
  • Patients may be selected for prophylaxis therapy based on factors that are known to increase risk of suffering a clinical disease state compared to the general population. For prophylaxis treatment, conditions of the clinical disease state may or may not be presented yet.
  • “Prophylaxis” treatment can be divided into (a) primary prophylaxis and (b) secondary prophylaxis.
  • Primary prophylaxis is defined as treatment to reduce or minimize the risk of a disease state in a patient that has not yet presented with a clinical disease state
  • secondary prophylaxis is defined as minimizing or reducing the risk of a recurrence or second occurrence of the same or similar clinical disease state.
  • prevention cover the preventive treatment of a subclinical disease-state in a mammal, particularly in a human, aimed at reducing the probability of the occurrence of a clinical disease-state.
  • Patients are selected for preventative therapy based on factors that are known to increase risk of suffering a clinical disease state compared to the general population.
  • Optically active forms may be prepared by resolution of racemic forms or by synthesis from optically active starting materials. All processes used to prepare compounds of the present invention and intermediates made therein are considered to be part of the present invention. When enantiomeric or diastereomeric products are prepared, they may be separated by conventional methods, for example, by chromatography or fractional crystallization. Depending on the process conditions the end products of the present invention are obtained either in free (neutral) or salt form. Both the free form and the salts of these end products are within the scope of the invention. If so desired, one form of a compound may be converted into another form.
  • a free base or acid may be converted into a salt; a salt may be converted into the free compound or another salt; a mixture of isomeric compounds of the present invention may be separated into the individual isomers.
  • Compounds of the present invention, free form and salts thereof, may exist in multiple tautomeric forms, in which hydrogen atoms are transposed to other parts of the molecules and the chemical bonds between the atoms of the molecules are consequently rearranged. It should be understood that all tautomeric forms, insofar as they may exist, are included within the invention.
  • stereoisomer refers to isomers of identical constitution that differ in the arrangement of their atoms in space. Enantiomers and diastereomers are examples of stereoisomers.
  • enantiomer refers to one of a pair of molecular species that are mirror images of each other and are not superimposable.
  • diastereomer refers to stereoisomers that are not mirror images.
  • racemate or “racemic mixture” refers to a composition composed of equimolar quantities of two enantiomeric species, wherein the composition is devoid of optical activity.
  • R and S represent the configuration of substituents around a chiral carbon atom(s).
  • the isomeric descriptors “R” and “S” are used as described herein for indicating atom configuration(s) relative to a core molecule and are intended to be used as defined in the literature (IUPAC Recommendations 1996 , Pure and Applied Chemistry, 68:2193-2222 (1996)).
  • chiral refers to the structural characteristic of a molecule that makes it impossible to superimpose it on its mirror image.
  • homochiral refers to a state of enantiomeric purity.
  • optical activity refers to the degree to which a homochiral molecule or nonracemic mixture of chiral molecules rotates a plane of polarized light.
  • alkyl or “alkylene” is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms.
  • C 1 to C 10 alkyl or “C 1-10 alkyl” (or alkylene) is intended to include C 1 , C 2 , C 3 , C 4 , C 5 , C 6 , C 7 , C 8 , C 9 , and C 10 alkyl groups.
  • C 1 to C 6 alkyl or “C 7 -C 6 alkyl” denotes alkyl having 1 to 6 carbon atoms.
  • Alkyl group can be unsubstituted or substituted with at least one hydrogen being replaced by another chemical group.
  • Example alkyl groups include, but are not limited to, methyl (Me), ethyl (Et), propyl (e.g., n-propyl and isopropyl), butyl (e.g., n-butyl, isobutyl, t-butyl), and pentyl (e.g., n-pentyl, isopentyl, neopentyl).
  • Alkenyl or “alkenylene” is intended to include hydrocarbon chains of either straight or branched configuration having the specified number of carbon atoms and one or more, preferably one to two, carbon-carbon double bonds that may occur in any stable point along the chain.
  • C 2 to C 6 alkenyl or “C 2-6 alkenyl” (or alkenylene) is intended to include C 2 , C 3 , C 4 , C 5 , and C 6 alkenyl groups.
  • alkenyl examples include, but are not limited to, ethenyl, 1-propenyl, 2-propenyl, 2-butenyl, 3-butenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-methyl-2-propenyl, and 4-methyl-3-pentenyl.
  • Alkynyl or “alkynylene” is intended to include hydrocarbon chains of either straight or branched configuration having one or more, preferably one to three, carbon-carbon triple bonds that may occur in any stable point along the chain.
  • C 2 to C 6 alkynyl or “C 2-6 alkynyl” (or alkynylene) is intended to include C 2 , C 3 , C 4 , C 5 , and C 6 alkynyl groups; such as ethynyl, propynyl, butynyl, pentynyl, and hexynyl.
  • alkoxy refers to an —O-alkyl group.
  • C 1 to C 6 alkoxy or “C 1-6 alkoxy” (or alkyloxy) is intended to include C 1 , C 2 , C 3 , C 4 , C 5 , and C 6 alkoxy groups.
  • Example alkoxy groups include, but are not limited to, methoxy, ethoxy, propoxy (e.g., n-propoxy and isopropoxy), and t-butoxy.
  • alkylthio or “thioalkoxy” represents an alkyl group as defined above with the indicated number of carbon atoms attached through a sulphur bridge; for example, methyl-S— and ethyl-S—.
  • Halo or “halogen” includes fluoro (F), chloro (Cl), bromo (Br), and iodo (I).
  • Haloalkyl is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms, substituted with 1 or more halogens.
  • haloalkyl include, but are not limited to, fluoromethyl, difluoromethyl, trifluoromethyl, trichloromethyl, pentafluoroethyl, pentachloroethyl, 2,2,2-trifluoroethyl, heptafluoropropyl, and heptachloropropyl.
  • haloalkyl also include “fluoroalkyl” that is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms, substituted with 1 or more fluorine atoms.
  • Haloalkoxy or “haloalkyloxy” represents a haloalkyl group as defined above with the indicated number of carbon atoms attached through an oxygen bridge.
  • C 1 to C 6 haloalkoxy or “C 1-6 haloalkoxy”
  • haloalkoxy include, but are not limited to, trifluoromethoxy, 2,2,2-trifluoroethoxy, and pentafluorothoxy.
  • haloalkylthio or “thiohaloalkoxy” represents a haloalkyl group as defined above with the indicated number of carbon atoms attached through a sulphur bridge; for example, trifluoromethyl-S—, and pentafluoroethyl-S—.
  • cycloalkyl refers to cyclized alkyl groups, including mono-, bi- or poly-cyclic ring systems. “C 3 to C 7 cycloalkyl” or “C 3-7 cycloalkyl” is intended to include C 3 , C 4 , C 5 , C 6 , and C 7 cycloalkyl groups.
  • Example cycloalkyl groups include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and norbornyl. Branched cycloalkyl groups such as 1-methylcyclopropyl and 2-methylcyclopropyl are included in the definition of “cycloalkyl”.
  • “carbocycle”, “carbocyclyl” or “carbocyclic residue” is intended to mean any stable 3-, 4-, 5-, 6-, 7-, or 8-membered monocyclic or bicyclic or 7-, 8-, 9-, 10-, 11-, 12-, or 13-membered bicyclic or tricyclic hydrocarbon ring, any of which may be saturated, partially unsaturated, unsaturated or aromatic.
  • carbocycles include, but are not limited to, cyclopropyl, cyclobutyl, cyclobutenyl, cyclopentyl, cyclopentenyl, cyclohexyl, cycloheptenyl, cycloheptyl, cycloheptenyl, adamantyl, cyclooctyl, cyclooctenyl, cyclooctadienyl, [3.3.0]bicyclooctane, [4.3.0]bicyclononane, [4.4.0]bicyclodecane (decalin), [2.2.2]bicyclooctane, fluorenyl, phenyl, naphthyl, indanyl, adamantyl, anthracenyl, and tetrahydronaphthyl (tetralin).
  • bridged rings are also included in the definition of carbocycle (e.g., [2.2.2]bicyclooctane).
  • carbocycles e.g., [2.2.2]bicyclooctane
  • Preferred carbocycles are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, phenyl, and indanyl.
  • carbocyclyl is used, it is intended to include “aryl”.
  • a bridged ring occurs when one or more carbon atoms link two non-adjacent carbon atoms.
  • Preferred bridges are one or two carbon atoms. It is noted that a bridge always converts a monocyclic ring into a tricyclic ring. When a ring is bridged, the substituents recited for the ring may also be present on the bridge.
  • bicyclic carbocyclyl or “bicyclic carbocyclic group” is intended to mean a stable 9- or 10-membered carbocyclic ring system that contains two fused rings and consists of carbon atoms. Of the two fused rings, one ring is a benzo ring fused to a second ring; and the second ring is a 5- or 6-membered carbon ring which is saturated, partially unsaturated, or unsaturated.
  • the bicyclic carbocyclic group may be attached to its pendant group at any carbon atom which results in a stable structure.
  • the bicyclic carbocyclic group described herein may be substituted on any carbon if the resulting compound is stable. Examples of a bicyclic carbocyclic group are, but not limited to, naphthyl, 1,2-dihydronaphthyl, 1,2,3,4-tetrahydronaphthyl, and indanyl.
  • Aryl groups refer to monocyclic or polycyclic aromatic hydrocarbons, including, for example, phenyl, naphthyl, and phenanthranyl. Aryl moieties are well known and described, for example, in Lewis, R. J., ed., Hawley's Condensed chemical Dictionary, 13th Edition, John Wiley & Sons, Inc., New York (1997). “C 6 or C 10 aryl” or “C 6-10 aryl” refers to phenyl and naphthyl.
  • aryl may be unsubstituted or substituted with 1 to 5 groups, preferably 1 to 3 groups, OH, OCH 3 , Cl, F, Br, I, CN, NO 2 , NH 2 , N(CH 3 )H, N(CH 3 ) 2 , CF 3 , OCF 3 , C( ⁇ O)CH 3 , SCH 3 , S( ⁇ O)CH 3 , S( ⁇ O) 2 CH 3 , CH 3 , CH 2 CH 3 , CO 2 H, and CO 2 CH 3 .
  • benzyl refers to a methyl group on which one of the hydrogen atoms is replaced by a phenyl group, wherein said phenyl group may optionally be substituted with 1 to 5 groups, preferably 1 to 3 groups, OH, OCH 3 , Cl, F, Br, I, CN, NO 2 , NH 2 , N(CH 3 )H, N(CH 3 ) 2 , CF 3 , OCF 3 , C( ⁇ O)CH 3 , SCH 3 , S( ⁇ O)CH 3 , S( ⁇ O) 2 CH 3 , CH 3 , CH 2 CH 3 , CO 2 H, and CO 2 CH 3 .
  • heterocycle As used herein, the term “heterocycle”, “heterocyclyl”, or “heterocyclic ring” is intended to mean a stable 3-, 4-, 5-, 6-, or 7-membered monocyclic or bicyclic or 7-, 8-, 9-, 10-, 11-, 12-, 13-, or 14-membered polycyclic heterocyclic ring that is saturated, partially unsaturated, or fully unsaturated, and that contains carbon atoms and 1, 2, 3 or 4 heteroatoms independently selected from the group consisting of N, O and S; and including any polycyclic group in which any of the above-defined heterocyclic rings is fused to a benzene ring.
  • the nitrogen and sulfur heteroatoms may optionally be oxidized (i.e., N ⁇ O and S(O) p , wherein p is 0, 1 or 2).
  • the nitrogen atom may be substituted or unsubstituted (i.e., N or NR wherein R is H or another substituent, if defined).
  • the heterocyclic ring may be attached to its pendant group at any heteroatom or carbon atom that results in a stable structure.
  • the heterocyclic rings described herein may be substituted on carbon or on a nitrogen atom if the resulting compound is stable.
  • a nitrogen in the heterocycle may optionally be quaternized. It is preferred that when the total number of S and O atoms in the heterocycle exceeds 1, then these heteroatoms are not adjacent to one another. It is preferred that the total number of S and O atoms in the heterocycle is not more than 1.
  • heterocycle it is intended to include heteroaryl.
  • Bridged rings are also included in the definition of heterocycle.
  • a bridged ring occurs when one or more atoms (i.e., C, O, N, or S) link two non-adjacent carbon or nitrogen atoms.
  • Examples of bridged rings include, but are not limited to, one carbon atom, two carbon atoms, one nitrogen atom, two nitrogen atoms, and a carbon-nitrogen group. It is noted that a bridge always converts a monocyclic ring into a tricyclic ring. When a ring is bridged, the substituents recited for the ring may also be present on the bridge.
  • heterocycles include, but are not limited to, acridinyl, azetidinyl, azocinyl, benzimidazolyl, benzofuranyl, benzothiofuranyl, benzothiophenyl, benzoxazolyl, benzoxazolinyl, benzthiazolyl, benztriazolyl benztetrazolyl, benzisoxazolyl, benzisothiazolyl, benzimidazolinyl, carbazolyl, 4aH-carbazolyl, carbolinyl, chromanyl, chromenyl, cinnolinyl, decahydroquinolinyl, 2H,6H-1,5,2-dithiazinyl, dihydrofuro[2,3-b]tetrahydrofuro[2,3-b]tetrahydrofuran, furanyl, furazanyl, imidazolidinyl, imidazolinyl,
  • Examples of 5- to 10-membered heterocycles include, but are not limited to, pyridinyl, furanyl, thienyl, pyrrolyl, pyrazolyl, pyrazinyl, piperazinyl, piperidinyl, imidazolyl, imidazolidinyl, indolyl, tetrazolyl, isoxazolyl, morpholinyl, oxazolyl, oxadiazolyl, oxazolidinyl, tetrahydrofuranyl, thiadiazinyl, thiadiazolyl, thiazolyl, triazinyl, triazolyl, benzimidazolyl, 1H-indazolyl, benzofuranyl, benzothiofuranyl, benztetrazolyl, benzotriazolyl, benzisoxazolyl, benzoxazolyl, oxindolyl, benzoxazolinyl, benz
  • Examples of 5- to 6-membered heterocycles include, but are not limited to, pyridinyl, furanyl, thienyl, pyrrolyl, pyrazolyl, pyrazinyl, piperazinyl, piperidinyl, imidazolyl, imidazolidinyl, indolyl, tetrazolyl, isoxazolyl, morpholinyl, oxazolyl, oxadiazolyl, oxazolidinyl, tetrahydrofuranyl, thiadiazinyl, thiadiazolyl, thiazolyl, triazinyl, and triazolyl. Also included are fused ring and spiro compounds containing, for example, the above heterocycles.
  • bicyclic heterocyclyl or “bicyclic heterocyclic group” is intended to mean a stable 9- or 10-membered heterocyclic ring system which contains two fused rings and consists of carbon atoms and 1, 2, 3, or 4 heteroatoms independently selected from the group consisting of N, O and S. Of the two fused rings, one ring is a 5- or 6-membered monocyclic aromatic ring comprising a 5-membered heteroaryl ring, a 6-membered heteroaryl ring or a benzo ring, each fused to a second ring.
  • the second ring is a 5- or 6-membered monocyclic ring which is saturated, partially unsaturated, or unsaturated, and comprises a 5-membered heterocycle, a 6-membered heterocycle or a carbocycle (provided the first ring is not benzo when the second ring is a carbocycle).
  • the bicyclic heterocyclic group may be attached to its pendant group at any heteroatom or carbon atom which results in a stable structure.
  • the bicyclic heterocyclic group described herein may be substituted on carbon or on a nitrogen atom if the resulting compound is stable. It is preferred that when the total number of S and O atoms in the heterocycle exceeds 1, then these heteroatoms are not adjacent to one another. It is preferred that the total number of S and O atoms in the heterocycle is not more than 1.
  • bicyclic heterocyclic group examples include quinolinyl, isoquinolinyl, phthalazinyl, quinazolinyl, indolyl, isoindolyl, indolinyl, 1H-indazolyl, benzimidazolyl, 1,2,3,4-tetrahydroquinolinyl, 1,2,3,4-tetrahydroisoquinolinyl, 5,6,7,8-tetrahydro-quinolinyl, 2,3-dihydro-benzofuranyl, chromanyl, 1,2,3,4-tetrahydro-quinoxalinyl, and 1,2,3,4-tetrahydro-quinazolinyl.
  • aromatic heterocyclic group or “heteroaryl” refers to substituted and unsubstituted aromatic 5- or 6-membered monocyclic groups, 9- or 10-membered bicyclic groups, and 11- to 14-membered tricyclic groups which have at least one heteroatom (O, S or N) in at least one of the rings, said heteroatom-containing ring preferably having 1, 2, or 3 heteroatoms selected from O, S, and N.
  • Each ring of the heteroaryl group containing a heteroatom can contain one or two oxygen or sulfur atoms and/or from one to four nitrogen atoms provided that the total number of heteroatoms in each ring is four or less and each ring has at least one carbon atom
  • Heteroaryl groups can be substituted or unsubstituted.
  • the nitrogen atom may be substituted or unsubstituted (i.e., N or NR wherein R is H or another substituent, if defined).
  • the nitrogen and sulfur heteroatoms may optionally be oxidized (i.e., N ⁇ O and S(O) p ) and the nitrogen atoms may optionally be quaternized.
  • Heteroaryl groups which are bicyclic or tricyclic must include at least one fully aromatic ring but the other fused ring or rings may be aromatic or non-aromatic.
  • the heteroaryl group may be attached at any available nitrogen or carbon atom of any ring.
  • the heteroaryl ring system may contain zero, one, two or three substituents.
  • Heteroaryl groups include, without limitation, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, furyl, quinolyl, isoquinolyl, thienyl, imidazolyl, thiazolyl, indolyl, pyrroyl, oxazolyl, benzofuryl, benzothienyl, benzthiazolyl, isoxazolyl, pyrazolyl, triazolyl, tetrazolyl, indazolyl, 1,2,4-thiadiazolyl, isothiazolyl, purinyl, carbazolyl, benzimidazolyl, indolinyl, benzodioxolanyl, and benzodioxane.
  • counterion is used to represent a negatively charged species such as chloride, bromide, hydroxide, acetate, and sulfate.
  • a dotted ring When a dotted ring is used within a ring structure, this indicates that the ring structure may be saturated, partially saturated or unsaturated.
  • substituted means that at least one hydrogen atom is replaced with a non-hydrogen group, provided that normal valencies are maintained and that the substitution results in a stable compound.
  • a substituent is keto (i.e., ⁇ O)
  • 2 hydrogens on the atom are replaced.
  • Keto substituents are not present on aromatic moieties.
  • a ring system e.g., carbocyclic or heterocyclic
  • Ring double bonds are double bonds that are formed between two adjacent ring atoms (e.g., C ⁇ C, C ⁇ N, or N ⁇ N).
  • nitrogen atoms e.g., amines
  • these may be converted to N-oxides by treatment with an oxidizing agent (e.g., mCPBA and/or hydrogen peroxides) to afford other compounds of this invention.
  • an oxidizing agent e.g., mCPBA and/or hydrogen peroxides
  • shown and claimed nitrogen atoms are considered to cover both the shown nitrogen and its N-oxide (N ⁇ O) derivative.
  • any variable occurs more than one time in any constituent or formula for a compound, its definition at each occurrence is independent of its definition at every other occurrence.
  • a group is shown to be substituted with 0-3 R groups, then said group may optionally be substituted with up to three R groups, and at each occurrence R is selected independently from the definition of R.
  • R is selected independently from the definition of R.
  • substituents and/or variables are permissible only if such combinations result in stable compounds.
  • phrases “pharmaceutically acceptable” is employed herein to refer to those compounds, materials, compositions, and/or dosage forms that are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, and/or other problem or complication, commensurate with a reasonable benefit/risk ratio.
  • pharmaceutically acceptable salts refer to derivatives of the disclosed compounds wherein the parent compound is modified by making acid or base salts thereof.
  • examples of pharmaceutically acceptable salts include, but are not limited to, mineral or organic acid salts of basic groups such as amines; and alkali or organic salts of acidic groups such as carboxylic acids.
  • the pharmaceutically acceptable salts include the conventional non-toxic salts or the quaternary ammonium salts of the parent compound formed, for example, from non-toxic inorganic or organic acids.
  • such conventional non-toxic salts include those derived from inorganic acids such as hydrochloric, hydrobromic, sulfuric, sulfamic, phosphoric, and nitric; and the salts prepared from organic acids such as acetic, propionic, succinic, glycolic, stearic, lactic, malic, tartaric, citric, ascorbic, pamoic, maleic, hydroxymaleic, phenylacetic, glutamic, benzoic, salicylic, sulfanilic, 2-acetoxybenzoic, fumaric, toluenesulfonic, methanesulfonic, ethane disulfonic, oxalic, and isethionic.
  • inorganic acids such as hydrochloric, hydrobromic, sulfuric, sulfamic, phosphoric, and nitric
  • organic acids such as acetic, propionic, succinic, glycolic, stearic, lactic, malic, tartaric,
  • the pharmaceutically acceptable salts of the present invention can be synthesized from the parent compound that contains a basic or acidic moiety by conventional chemical methods.
  • such salts can be prepared by reacting the free acid or base forms of these compounds with a stoichiometric amount of the appropriate base or acid in water or in an organic solvent, or in a mixture of the two; generally, nonaqueous media like ether, ethyl acetate, ethanol, isopropanol, or acetonitrile are preferred.
  • nonaqueous media like ether, ethyl acetate, ethanol, isopropanol, or acetonitrile are preferred.
  • Lists of suitable salts are found in Remington's Pharmaceutical Sciences, 18th Edition, Mack Publishing Company, Easton, Pa. (1990), the disclosure of which is hereby incorporated by reference.
  • compounds of formula I may have prodrug forms. Any compound that will be converted in vivo to provide the bioactive agent (i.e., a compound of formula I) is a prodrug within the scope and spirit of the invention.
  • a prodrug within the scope and spirit of the invention.
  • Various forms of prodrugs are well known in the art. For examples of such prodrug derivatives, see:
  • Bundgaard, H. Chapter 5, “Design and Application of Prodrugs”, A Textbook of Drug Design and Development , pp. 113-191, Krosgaard-Larsen, P. et al., eds., Harwood Academic Publishers (1991);
  • Compounds containing a carboxy group can form physiologically hydrolyzable esters that serve as prodrugs by being hydrolyzed in the body to yield formula I compounds per se.
  • Such prodrugs are preferably administered orally since hydrolysis in many instances occurs principally under the influence of the digestive enzymes. Parenteral administration may be used where the ester per se is active, or in those instances where hydrolysis occurs in the blood.
  • physiologically hydrolyzable esters of compounds of formula I include C 1-6 alkyl, C 1-6 alkylbenzyl, 4-methoxybenzyl, indanyl, phthalyl, methoxymethyl, C 1-6 alkanoyloxy-C 1-6 alkyl (e.g., acetoxymethyl, pivaloyloxymethyl or propionyloxymethyl), C 1-6 alkoxycarbonyloxy-C 1-6 alkyl (e.g., methoxy carbonyl-oxymethyl or ethoxycarbonyloxymethyl, glycyloxymethyl, phenylglycyloxymethyl, (5-methyl-2-oxo-1,3-dioxolen-4-yl)-methyl), and other well-known physiologically hydrolyzable esters used, for example, in the penicillin and cephalosporin arts. Such esters may be prepared by conventional techniques known in the art.
  • prodrugs Preparation of prodrugs is well known in the art and described in, for example, King, F. D., ed., Medicinal Chemistry: Principles and Practice , The Royal Society of Chemistry, Cambridge, UK (1994); Testa, B. et al., Hydrolysis in Drug and Prodrug Metabolism. Chemistry, Biochemistry and Enzymology , VCHA and Wiley-VCH, Zurich, Switzerland (2003); Wermuth, C. G., ed., The Practice of Medicinal Chemistry , Academic Press, San Diego, Calif. (1999).
  • the present invention is intended to include all isotopes of atoms occurring in the present compounds.
  • Isotopes include those atoms having the same atomic number but different mass numbers.
  • isotopes of hydrogen include deuterium and tritium.
  • Deuterium has one proton and one neutron in its nucleus and that has twice the mass of ordinary hydrogen.
  • Deuterium can be represented by symbols such as “ 2 H” or “D”.
  • Isotopes of carbon include 13 C and 14 C.
  • Isotopically-labeled compounds of the invention can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described herein, using an appropriate isotopically-labeled reagent in place of the non-labeled reagent otherwise employed. Such compounds have a variety of potential uses, e.g., as standards and reagents in determining the ability of a potential pharmaceutical compound to bind to target proteins or receptors, or for imaging compounds of this invention bound to biological receptors in vivo or in vitro.
  • “Stable compound” and “stable structure” are meant to indicate a compound that is sufficiently robust to survive isolation to a useful degree of purity from a reaction mixture, and formulation into an efficacious therapeutic agent. It is preferred that compounds of the present invention do not contain a N-halo, S(O) 2 H, or S(O)H group.
  • solvate means a physical association of a compound of this invention with one or more solvent molecules, whether organic or inorganic. This physical association includes hydrogen bonding. In certain instances the solvate will be capable of isolation, for example, when one or more solvent molecules are incorporated in the crystal lattice of the crystalline solid.
  • the solvent molecules in the solvate may be present in a regular arrangement and/or a non-ordered arrangement.
  • the solvate may comprise either a stoichiometric or nonstoichiometric amount of the solvent molecules.
  • “Solvate” encompasses both solution-phase and isolable solvates. Exemplary solvates include, but are not limited to, hydrates, ethanolates, methanolates, and isopropanolates. Methods of solvation are generally known in the art.
  • the compounds of the present invention can be prepared in a number of ways known to one skilled in the art of organic synthesis.
  • the effectiveness of compounds of the present invention as ROCK inhibitors can be determined in a 30 ⁇ L, assay containing 20 mM HEPES, pH 7.5, 20 mM MgCl 2 , 0.015% Brij-35, 4 mM DTT, 5 ⁇ M ATP and 1.5 ⁇ M peptide substrate (FITC-AHA-AKRRRLSSLRA-OH).
  • Compounds were dissolved in DMSO so that the final concentration of DMSO was ⁇ 2%, and the reaction was initiated with Rho kinase variants. After incubation, the reaction was terminated by the addition of EDTA and the phosphorylated and non-phosphorylated peptides separated using a LABCHIP® 3000 Reader (Caliper Life Sciences).
  • Controls consisted of assays that did not contain compound, and backgrounds consisted of assays that contained enzyme and substrate but had EDTA from the beginning of the reaction to inhibit kinase activity.
  • Compounds were tested in dose-response format, and the inhibition of kinase activity was calculated at each concentration of compound. The inhibition data were fit using a curve-fitting program to determine the IC 50 ; i.e., the concentration of compound required to inhibit 50% of kinase activity.
  • ROCK2 inhibitory activity of ⁇ 2 ⁇ M (2000 nM) was observed and shown in Table A below.
  • the ranges of the ROCK2 IC 50 values are as follows: ROCK2 IC 50 : ++++( ⁇ 10 nM)+++(10-100 nM)++(100-500 nM)+(500-2000 nM)
  • ROCK2 IC 50 1 ++++ 2 ++++ 3 ++++ 4 ++++ 5 +++ 6 ++++ 7 ++++ 8 ++++ 9 ++++ 10 ++++ 11 +++ 12 +++ 13 ++++ 14 ++++ 15 ++++ 16 +++ 17 +++ 18 +++ 19 +++ 20 +++ 21 +++ 22 +++ 23 +++ 24 ++ 25 ++ 26 ++ 27 ++ 28 ++ 29 ++ 30 ++ 31 + 32 + 33 + 34 + 35 +
  • the compounds of the present invention may be synthesized by many methods available to those skilled in the art of organic chemistry (Maffrand, J. P. et al., Heterocycles, 16(1):35-37 (1981)).
  • General synthetic schemes for preparing compounds of the present invention are described below. These schemes are illustrative and are not meant to limit the possible techniques one skilled in the art may use to prepare the compounds disclosed herein. Different methods to prepare the compounds of the present invention will be evident to those skilled in the art. Additionally, the various steps in the synthesis may be performed in an alternate sequence in order to give the desired compound or compounds.
  • Examples of compounds of the present invention prepared by methods described in the general schemes are given in the intermediates and examples sections set out hereinafter.
  • Preparation of homochiral examples may be carried out by techniques known to one skilled in the art.
  • homochiral compounds may be prepared by separation of racemic products by chiral phase preparative HPLC.
  • the example compounds may be prepared by methods known to give enantiomerically enriched products. These include, but are not limited to, the incorporation of chiral auxiliary functionalities into racemic intermediates which serve to control the diastereoselectivity of transformations, providing enantio-enriched products upon cleavage of the chiral auxiliary.
  • the compounds of the present invention can be synthesized using the methods described below, together with synthetic methods known in the art of synthetic organic chemistry, or by variations thereon as appreciated by those skilled in the art. Preferred methods include, but are not limited to, those described below.
  • the reactions are performed in a solvent or solvent mixture appropriate to the reagents and materials employed and suitable for the transformations being effected. It will be understood by those skilled in the art of organic synthesis that the functionality present on the molecule should be consistent with the transformations proposed. This will sometimes require a judgment to modify the order of the synthetic steps or to select one particular process scheme over another in order to obtain a desired compound of the invention.
  • Scheme 1 shows the synthesis of generic compounds 1g.
  • Bicyclic bromoketones 1a can be converted to 1,3-diketones 1c or 1,3-ketoaldehyde equivalent 1b, which upon treatment with hydrazine, provides fused tricyclic intermediates 1d.
  • the pyrazole of 1 d is protected either by Boc or preferably SEM group to form 1e as mixtures of regio-isomers.
  • 1e can undergo N-arylation directly via palladium mediated coupling, which upon further functionalization and deprotection to provide compounds 1g.
  • 1e can be converted to anilines 1f, which undergo direct amide coupling or reductive amination, followed by further functionalization and deprotection to afford the compounds 1g.
  • 1e can also be converted to carboxylic acid 1h via palladium mediated carbonylation or metal-halogen exchange followed by quenching with CO 2 . Coupling of 1h with amines or anilines followed by deprotection affords compounds 1g.
  • Scheme 2 shows the synthesis of generic fused tricyclic compounds 2f.
  • Gold-mediated condensation of ketones 2a with propargyl amine provides bicyclic pyridine compounds 2b.
  • Deprotection of 2b affords ketone 2c.
  • the fused tricyclic intermediates 2d can be obtained by applying the same sequence as described in scheme 1 for the synthesis of intermediates 1d.
  • m-CPBA oxidation of 2d, followed by POCl 3 treatment provides compounds 2e.
  • 2e can be converted to 2f either through palladium mediated coupling, followed by deprotection, or via direct replacement of Cl with amines or anilines, followed by deprotection.
  • Scheme 3 outlines the synthesis of generic fused tricyclic compounds 3g.
  • Suzuki coupling of protected pyrazole bromides 3a with fluoro-, nitro-substituted phenyl boronates 3b provides compounds 3c.
  • Reduction of methyl ester 3c to primary alcohol 3d, followed by cyclization affords compounds 3e.
  • Reduction of the NO 2 group in 3e gives anilines 3f, which are further functionalized and deprotected to provide compounds 3g.
  • the sequence of preparing 3d can be changed slightly by first reducing the methyl ester of 3a to its alcohol followed by Suzuki coupling to 3b.
  • Scheme 4 shows the synthesis of generic fused tricyclic compounds 4e, which are prepared in a similar fashion as compounds 3g in scheme 3. Suzuki coupling of protected pyrazole bromides 4a with boronate of amninopyridines 4b affords compounds 4c. Cyclization of 4c provides 4d, which upon further functionalization and deprotection gives the final compounds 4e.
  • Reverse phase preparative HPLC was carried out using C18 columns eluting with gradients of Solvent A (90% H 2 O, 10% MeOH, 0.1% TFA) and Solvent B (10% H 2 O, 90% MeOH, 0.1% TFA, UV 220 nm) or with gradients of Solvent A (90% H 2 O, 10% ACN, 0.1% TFA) and Solvent B (10% H 2 O, 90% ACN, 0.1% TFA, UV 220 nm) or with gradients of Solvent A (98% H 2 O, 2% ACN, 0.05% TFA) and Solvent B (98% ACN, 2% H 2 O, 0.05% TFA, UV 220 nm) (or) Sunfire Prep C18 OBD 5u 30 ⁇ 100 mm, 25 min gradient from 0-100% B.
  • A H 2 O/ACN/TFA 90:10:0.1.
  • B ACN/H 2 O/TFA 90:10:0.1 (or) Waters XBridge C18, 19 ⁇ 200 mm, 5- ⁇ m particles; Guard Column: Waters XBridge C18, 19 ⁇ 10 mm, 5- ⁇ m particles; Solvent A: water with 20-mM ammonium acetate; Solvent B: 95:5 acetonitrile:water with 20-mM ammonium acetate: Gradient: 25-65% B over 20 minutes, then a 5-minute hold at 100% B; Flow: 20 mL/min.
  • Method A Waters Acquity UPLC BEH C18 (1.7 ⁇ m particle size, 2.1 ⁇ 50 mm); Solvent A: 5:95 acetonitrile:water with 10 mM ammonium acetate; Solvent B: 95:5 acetonitrile:water with 10 mM ammonium acetate; Temperature: 50 OC; Gradient: 0-100% B over 3 minutes, then hold at 100% B for 0.75-minute; Flow: 1.11 mL/min.
  • Method B Waters Acquity UPLC BEH C18 (1.7 ⁇ m particle size, 2.1 ⁇ 50 mm); Solvent A: 5:95 acetonitrile:water with 0.1% TFA; Solvent B: 95:5 acetonitrile:water with 0.1% TFA; Temperature: 50° C.; Gradient: 0-100% B over 3 min, then hold at 100% B for 0.75 min; Flow: 1.11 mL/min.
  • Method C Sunfire C18 column (3.5 ⁇ m particle size, 3.0 ⁇ 150 mum).
  • Solvent A 5:95 acetonitrile:water with 0.05% TFA
  • Solvent B 95:5 acetonitrile:water with 0.05% TFA
  • Flow 1.0 mL/min.
  • Method D XBridge Phenyl column (3.5 ⁇ m particle size, 3.0 ⁇ 150 mm). Solvent A: 5:95 acetonitrile:water with 0.05% TFA; Solvent B: 95:5 acetonitrile:water with 0.05% TFA); Gradient elution from 10-100% Solvent B over 10 min then hold at 100% B for 5 min; Flow: 1.0 mL/min.
  • intermediate 1B To a solution of intermediate 1B (3.45 g, 13.9 mmol) in THF (138 mL) at 0° C. was added 60% sodium hydride (0.775 g, 19.4 mmol). The reaction was stirred at 0° C. for 20 min, then (2-(chloromethoxy)ethyl)trimethylsilane (2.70 mL, 15.2 mmol) was added dropwise and the reaction was warmed slowly to rt overnight. Then, MeOH was added and the mixture was concentrated and purified by flash chromatography (120 g column, 0-50% EtOAc in hexanes) to afford intermediate 1C as a pale yellow oil (4.43 g, 84%).
  • example 1A (0.902 g, 2.84 mmol) in MeOH (50 mL) and water (25 mL) was added osmium tetroxide (2.5% in t-BuOH) (2.50 mL, 0.199 mmol). After 5 min, sodium periodate (1.82 g, 8.53 mmol)) was added. The reaction was stirred at rt for 2 h. The mixture was added to water and extract 2 ⁇ with EtOAc. The combined organic layers were washed with water and brine, concentrated then purified by flash chromatography (40 g column, 0-60% EtOAc in Hexanes) to give example 1B (688 ⁇ g, 76% yield) as a grey oil.
  • Example 1C 1-(tert-butyl) 2-methyl 2-(2-((2-((2-((2-((2-(trimethylsilyl)ethoxy)methyl)-4,5-dihydro-2H-benzo[e]indazol-7-yl)amino)ethyl)indoline-1,2-dicarboxylate
  • example 1C 51 mg, 0.082 mmol
  • THF 824 ⁇ L
  • 60% sodium hydride 6.6 mg, 0.165 mmol
  • the reaction was warmed up to rt then to 65° C. for 1 h.
  • the reaction was cooled to rt, and MeOH was added to quench the reaction. It was concentrated and purified by flash chromatography (12 g column, 0-50% EtOAc in Hexanes) to give example 1D as an off-white solid (26.5 mg, 55%).
  • 1 H NMR 400 MHz, CHLOROFORM-d
  • ⁇ 7.94 7.94 (br s.
  • example 1E As a white solid (7 mg, 86%).
  • Example 2B To Example 2B (22 mg, 0.036 mmol) in a microwave tube was added TFA (361 ⁇ l). The tube was sealed and healed at 130° C. for 7 h, then cooled to rt overnight. TFA was removed and DMF/MeOH was added. The mixture was filtered and purified by reverse phase HPLC (CH 3 CN/1-120/0. % TFA system, 0-100%) to give example 2 as a white solid (9.4 mg, 53%).
  • Example 3B To a solution of example 3B (62 mg, 0.133 mmol) in THF (663 ⁇ L) was added 3-methoxyaniline (32.7 ng, 0.265 mmol), sodium acetate trihydrate (54.1 mg, 0.398 mmol) and water (663 ⁇ L). The reaction was heated at 80° C. overnight. The mixture was diluted with EtOAc, washed with H 2 O and brine, dried over MgSO 4 , filtered and concentrated. Purification by flash chromatography (12 g column, 0-70% EtOAc in Hexanes) gave Example 3C (32.8 mg, 50%) as a pale yellow solid.
  • Example 3C A solution of example 3C (32 mg, 0.065 mmol) and anisole (35.3 ⁇ L, 0.324 mmol) in TFA (647 ⁇ l) in a sealed tube was heated at 130° C. for 5 h. The reaction was cooled down to rt and stirred at it overnight. Then, TFA was removed and the mixture purified by prep HPLC (CH 3 CN/H 2 O/0.1% TFA, 0-100%) and Chiral SFC to give Example 3 as a light yellow solid (2.5 mg, 10%).
  • Example 4A To a solution of example 4A (24 mg, 0.042 mmol) in THF (0.42 mL) was added 1M TBAF (208 ⁇ L, 0.208 mmol) and the reaction was stirred at 85° C. overnight. The mixture was concentrated and purified by flash chromatography (12 g column, 0-100% EtOAc in Hexanes and then 10% MeOH in DCM) to give the product. Then, this product was dissolved in 0.5 mL DCM and 0.2 mL TFA was added. The mixture was stirred at rt for 1 h and concentrated. Purification by prep HPLC (0-100% CH-3CN/H 2 O with 0.1% TFA) provided Example 4 as an off-white solid (4 mg, 28%).
  • Example 5A 1-(3-methoxybenzyl)-3-(2-((2-(trimethylsilyl)ethoxy)methyl)-2,4-dihydropyrazolo[4′,3′:4,5]pyrano[2,3-b]pyridin-7-yl)urea
  • Example 5 (10 mg, 78%).
  • Example 1 The following examples in Table 1 were prepared using similar procedures to that which were used in the preparation of Example 1-3.

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ES2814325T3 (es) 2016-07-07 2021-03-26 Bristol Myers Squibb Co Derivados de lactama, urea cíclica y carbamato y de triazolona como inhibidores potentes y selectivos de ROCK
WO2018009625A1 (fr) 2016-07-07 2018-01-11 Bristol-Myers Squibb Company Spirolactames utilisés comme inhibiteurs de rho-kinases (rock)
WO2018102325A1 (fr) 2016-11-30 2018-06-07 Bristol-Myers Squibb Company Inhibiteurs de rho kinase tricyclique
JP7313331B2 (ja) 2017-07-12 2023-07-24 ブリストル－マイヤーズ スクイブ カンパニー Ｒｏｃｋ阻害剤としてのスピロヘプタニルヒダントイン
WO2019014300A1 (fr) 2017-07-12 2019-01-17 Bristol-Myers Squibb Company Phénylacétamides utilisés en tant qu'inhibiteurs de rock
TW201908293A (zh) 2017-07-12 2019-03-01 美商必治妥美雅史谷比公司 作為rock抑制劑之5員及雙環雜環醯胺
KR20200027989A (ko) 2017-07-12 2020-03-13 브리스톨-마이어스 스큅 컴퍼니 심부전의 치료를 위한 rock의 5원-아미노헤테로사이클 및 5,6- 또는 6,6-원 비시클릭 아미노헤테로시클릭 억제제
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